

The Graco 180403 Fitting, Nipple, Reducing is an OEM threaded adapter that transitions between two different thread sizes to join mismatched fluid or air line connections in Graco systems.
The Graco 180403 Fitting, Nipple, Reducing is an OEM threaded transition fitting that connects two different thread size ports in Graco fluid/air systems, allowing secure joins between mismatched components.
This reducing nipple provides a secure transition between larger and smaller threaded connections, used in fluid and air plumbing across compatible Graco sprayers, regulators, and accessory systems.
| Part Number | 180403 |
|---|---|
| Type | Reducing threaded nipple |
| Application | Fluid/air line connections with different thread sizes |
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